Making Inference from Random Samples

Quiz
•
Mathematics
•
7th Grade
•
Hard
Anthony Clark
FREE Resource
8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Margo wants to convince her father to change her curfew from 9 P.M. to 10 P.M. She gathers data on curfew times from a random sample of students at her middle school. Can Margo use these data to present a valid inference that will convince her father? Explain.
Yes; Most students have a curfew of 10 P.M. or later.
Yes; More students have a curfew of 9 P.M. than any other time.
No; Most students have a curfew of 9 P.M. or earlier.
No; More students have a curfew of 10 P.M. or 11 P.M. than 8 P.M.
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Ana wants to know the average student’s opinion of the tardy policy at her school. Which group of students should she survey in order to achieve the most accurate results?
Thirty randomly selected students from her school
Thirty students who are rarely tardy
thirty of her friends
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
True or False: Random samples can represent the population
True
False
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Making a conclusion by interpreting data is called making a(n) ________________________.
Inference
population
random sample
sample
valid inference
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A town has 35,000 registered voters. A random sample of 500 voters finds that 125 are in favor of a new dog park. How many are likely to vote for the dog park?
25
125
2,625
8,750
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Russell randomly surveys seventh-graders in his school and finds that 6 of 30 attend summer camp. If there are 200 seventh-graders in his school, about how many are expected to attend summer camp?
40
1,000
176
There is not enough information to answer.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Zoie completes a report by asking 70 students across campus. She found that 48% of CIAA students do not wash their hands after using the bathroom. What is the population of her survey?
the bathroom
CIAA students
48% of students
8.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Biased or Random?
Audi wants to find out how students get to school at Menifee Elementary so she places the names of all students into a fish bowl and pulls out 50 so she can survey them.
Biased
Random
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